All cells and many subcellular structures are surrounded by a membrane. Assuming a typical membrane to be about 8 nm wide, how many such membranes would have to be aligned side by side before the structure could be seen with the light microscope

25 membranes

Explanation:

A light microscope makes it possible for the scientist to view and visualize structures with a minimum of 200 nm in diameter. So, if a typical membrane is about 8 nm wide, then we can divide the minimum diameter with the given width of the typical membrane to determine the number of membranes.

SO;

= 25 membranes

So, in a light microscope, there are about 25 membranes that will align side by side to view the structure.

the alkaline earth metals (beryllium (be), magnesium (mg), calcium (ca), strontium (sr), barium (ba), and radium (ra)) are a group of chemical elements in the s-block of the periodic table with very similar properties: shiny. silvery-white. hopefully this ? i didn't fully understand the question

1) a

2)c

3)a

4)c

5)b

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